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Additional measurements of the high-latitude sunspot rotation rate /Research note/Sunspot rotation rate measurements at high sunspot latitudes are reported for the period 1966-68, based on ten spots at latitudes greater than about 28 deg from H-alpha patrol records for this period. A sidereal rotation rate of 13.70 + or - 0.07 deg/day was found on the average, at 31.05 + or - 0.01 deg. Taken together, the full set of measurements in this latitude regime yield a rotation rate that is in excellent agreement with the result derived by Newton and Nunn (1951) from recurrent spots at lower latitudes throughout the six cycles from 1878 to 1944.
Document ID
19810064716
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Landman, D. A.
(Hawaii, University Honolulu, HI, United States)
Takushi, J. T.
(Hawaii Univ. Honolulu, HI, United States)
Date Acquired
August 11, 2013
Publication Date
October 1, 1981
Publication Information
Publication: Solar Physics
Volume: 73
Subject Category
Solar Physics
Accession Number
81A49120
Funding Number(s)
CONTRACT_GRANT: NGL-12-001-011
Distribution Limits
Public
Copyright
Other

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